## Real Analysis Exchange

### Points of Continuity, Quasicontinuity, Cliquishness, and Upper and Lower Quasicontinuity

Ján Borsík

#### Abstract

The quadruplet $(C(f), Q(f), E(f), A(f))$ is characterized, where $C(f)$, $Q(f)$, $E(f)$ and $A(f)$ are the sets of all continuity, quasicontinuity, upper and lower quasicontinuity and cliquishness points of a real function $f$ of real variable, respectively.

#### Article information

Source
Real Anal. Exchange Volume 33, Number 2 (2007), 339-350.

Dates
First available in Project Euclid: 18 December 2008

http://projecteuclid.org/euclid.rae/1229619412

Mathematical Reviews number (MathSciNet)
MR2458251

Zentralblatt MATH identifier
1162.54003

#### Citation

Borsík, Ján. Points of Continuity, Quasicontinuity, Cliquishness, and Upper and Lower Quasicontinuity. Real Anal. Exchange 33 (2007), no. 2, 339--350. http://projecteuclid.org/euclid.rae/1229619412.

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